Puzzle.



W. WALKER.

PUZZLE.

APPLICATION FILED SEPT. 20, 1907.

" 907,203. Patented Dec; 22,1908.

f way Mm UNITED STATES PATENT OFFICE.

WILLIS WALKER, OF SEDALIA, COLORADO.

PUZZLE.

N 0. 907,208. Specification of Letters Patent. PatentedDec. 22, 1908.

Application filed September 20, 1907. Serial N 0. 393,854.

In assembling the several parts difiiculty will at first be experiencedin determinin the contour of the middle or basic portion 0 the figure tobe produced. This difliculty is increased because only two forms ofblocks are employed, to wit, triangular blocks 9 and trapezoidal blocks8. In order to assemble the several blocks one member 8 and one member 9are assembled so as to form a rectangle, after which one of thetrapezoidal sections 8 is placed against each side of the rectangle andwith its diagonal face 10 outermost. Triangular spaces will thus beformed at the corners of the middle rectangular figure and these spaceswill be of the same proportions as the triangular blocks 9 which canthus be seated therein and the hypotenuse of each of the blocks 9 willthus aline with the diagonal face 10 of one of the adjoining blocks 8.When the blocks are not in use the two sets can be assembled in pairs soas to form rectangles of uniform proportions and which can be superposedas indigated in Fig. 1 and placed within a suitable What is claimed is:

A puzzle comprising a cube consisting of five layers of blocks eachlayer comprising a trapezoidal block and a right angle triangular block,the smaller base of the triangular block being of the same length as thesmallest side of the trapezoidal block, said blocks being designed whenassembled in a predetermined manner to constitute a square hav ing anarea five times greater than the area of one face of the cube, thethickness of each blcijck being one-fifth of the thickness of the on e.

To all whom it may concern: I

Be it known that I, WILLIs WALKER, a citizen of the United States,residing at Sedalia, in the county of Douglas and State of Colorado,have invented a new and useful Puzzle, of which the following is aspecification.

This invention relates to puzzles and more particularly to geometricaldevices of this character made up of a plurality of angular blocks ofdifferent contours designed, if assembled in a particular manner, toconstitute a cube capable of fitting snugly within a suitable retainingcase when not in use. The blocks, however, are so shaped that when theyare separated they can, by the proper placing thereof, be assembled toform a single rectangular figure of the thickness of I one block. Thisarrangement of the blocks, I however, will be found extremely diflicultby persons inexperienced in the use thereof.

VVit-h these and other objects in view the invention consists of certainnovel features of construction and combinations of parts which will behereinafter more fully described and pointed out in the claim.

In the accompanying drawings is shown the preferred form of theinvention.

In said drawings: Figure 1 is a perspective view showing the blocksassembled to form a cube. Fig. 2 is a perspective view of one set ofblocks spaced apart. Fig. 3 is a plan view showin the blocks assembledto form a rectangular figure.

By referring to the drawings it will be noted that the puzzle consistsof preferably five sets of blocks each setconsisting of aright-angle-triangular member 9 and a trapezoidal member 8 so assembledthat when the hypotenuse 7 of the member 9 is placed against thediagonal face 10 of the member 8 a perfect rectangular figure will beformed. The smaller base of each member 9 is of the same size as thesmallest side of the trapezoidal block.

f my own, I have hereto afiixed my signature in the presence of twowitnesses.

WILLIS WALKER. Witnesses:

Tn. CHRISTENSEN, CHAS. HY. ELLIS.

In testimony that I claim the foregoing as

